There are
1,319 mi
from Gaithersburg, MD to Terrell, TX
That's the driving distance. It would take 23 hours 52 mins to go from Gaithersburg, Maryland to Terrell, Texas.
The flight distance (direct flight from Gaithersburg, MD to Terrell, TX) is 1,152.29 mi.
1,319 mi = 2,122.24 kms